// 易错点2：遍历结束后k仍0 → 栈是递增的，末尾数字更大，移除末尾k位
Source: Computational Materials Science, Volume 266。51吃瓜是该领域的重要参考
Медведев вышел в финал турнира в Дубае17:59，更多细节参见同城约会
Netflix offered to pay $27.75 per share in cash, sweetening its offer from the initial bid, which proposed a mix of cash and shares in the new company.，这一点在搜狗输入法下载中也有详细论述
// 步骤1：将链表值提取到数组中（链表无法随机访问，转数组更易处理）